Question 1039085
A swimming pool can be filled by 5 pumps working for 2 hrs each.
find the no. of pump-hrs required to fill the pool
5 * 2 = 10 pump-hrs required to fill the pool
:
If one of the pumps is non-functional, how much extra time would be required to fill the pool?
let t = time required with 4 pumps
4t = 10
t = 10/4
t = 2.5 hrs
:
A half hr longer, find the percentage longer
.5/2 * 100 = 25% longer
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